Ton bag discharge port sewing device

Abstract

The invention relates to a ton bag discharge port sewing device. The ton bag discharge port sewing device comprises a rack, a feeding mechanism, a rotating mechanism, an adjusting-conveying mechanism, a hemming mechanism and a sewing mechanism. The rack adopts a supporting table structure, and an upper table top of the supporting table comprises a horizontal table top and a lower inclined table top part; the rotating mechanism is vertically mounted on the lower inclined table top and comprises a central disc, a bottom bag supporting seat and a rotating driving motor; the adjusting-conveying mechanism is arranged above the lower inclined table top, is coaxially and fixedly connected with a center disc and a bottom bag supporting seat through a center rod, and is used for completing the actions of opening a discharge port, adjusting the posture and conveying downwards; the feeding mechanism is used for conveying the discharging opening to a machining position; the hemming mechanism and the sewing mechanism are installed on the horizontal table top, the hemming mechanism is used for hemming the bottom end of the discharging port, and the sewing mechanism is used for hemming the bottom end of the discharging port and sewing a bottom bag of the ton bag. The automatic hemming device is compact in structure, and can realize automatic hemming of the discharge port of the ton bag and sewing of the discharge port and a bottom bag.

Description

Technical Field

[0001] The invention belongs to the technical field of packaging equipment, and in particular relates to a device for sewing a discharge port of a ton bag. Background Art

[0002] At present, the curling and sewing process of ton bags in the industrial production field is basically completed manually by workshop workers. Not only is the labor intensity of workers high, but the company also faces problems such as low efficiency and low completion accuracy. Therefore, realizing the automated production of curling and sewing of ton bags is an important problem that needs to be solved urgently by the factory.

[0003] In order to solve the above problems, many corresponding patents have appeared in the market. However, there are some problems or shortcomings. The current curling devices have the following solutions:

[0004] 1. Chinese patent CN209368474U discloses an efficient sewing device for environmentally friendly packaging plastic woven bags, which solves the problem of sewing plastic woven bags, but requires more complicated adjustments for packaging bags of different sizes.

[0005] 2. The automatic sewing device for woven bags disclosed in Chinese patent CN 202120749463.2 solves the sewing problem of woven bags, but the overall device is relatively complex. Summary of the invention

[0006] The purpose of the present invention is to overcome the deficiencies of the prior art and to provide a ton bag outlet sewing device which has a compact structure and can improve the degree of automation of ton bag crimping and shaping.

[0007] In order to achieve the above object, the present invention provides the following technical solutions:

[0008] A ton bag outlet sewing device comprises a frame, a feeding mechanism, a rotating mechanism, an adjusting-conveying mechanism, a crimping mechanism and a sewing mechanism;

[0009] The frame adopts a support table structure, and the upper desktop of the support table includes a horizontal desktop part and a lower inclined desktop part connected to one side of the horizontal desktop part; the rotating mechanism is vertically installed on the lower inclined desktop, including a central disk, a bottom bag support seat and a rotating drive motor; the shape of the bottom bag support seat matches the shape of the inner hole on the bottom bag of the ton bag, the bottom bag support seat and the central disk are arranged above the lower inclined desktop in a coaxial manner, and the rotating drive motor is arranged below the lower inclined desktop and is drivingly connected to the lower end of the central disk;

[0010] The adjustment-conveying mechanism includes a center rod, six spreading rods, a spreading control mechanism, three groups of conveying units, a pressure sensor and a position sensor; the main part of the center rod is a regular hexagonal rod structure, and the lower end of the center rod is inserted and fixed with the center hole on the bottom bag support seat and the center hole on the center disk; the six spreading rods are arranged on the periphery of the center rod along the circumferential direction and are opposite to the six faces of the center rod one by one, and the spreading control mechanism includes six groups of scissor-type spreading frames, which are respectively connected to the six faces of the center rod and the corresponding The first electric push rod is used to drive the opening of the ton bag outlet sleeved on the outer periphery of the six opening rods; three groups of conveying units are respectively installed on three opening rods that are not adjacent to each other, so as to realize the downward conveying of the ton bag outlet; three groups of pressure sensors are respectively installed on the outside of the three opening rods without conveying units, so as to control the cut-off position of the opening process of the outlet; three groups of position sensors are respectively installed on the three opening rods without conveying units, near the upper end, so as to control the cut-off position of the conveying process of the outlet;

[0011] The feeding mechanism is arranged outside the left side of the frame, and is used to transfer the discharge ports of the ton bags stacked on the feeding table by adsorption and put them on the periphery of the six support rods;

[0012] The sewing mechanism includes a long-arm sewing machine, which is mounted on the horizontal table top of the support table in an adjustable manner forward and backward with the sewing end facing the rotation center of the rotating mechanism; the curling mechanism is mounted on the horizontal table top of the support table and is located outside one side of the sewing mechanism; the curling mechanism is used to complete the curling action of the bottom end of the discharge port; the sewing mechanism is used to complete the stitching action of the curling of the bottom end of the discharge port and the bottom bag of the ton bag.

[0013] Moreover, a hexagonal blind hole is arranged at the center of the center disk, and a hexagonal through hole is arranged at the center of the bottom bag support seat. The hexagonal through hole is aligned with the hexagonal blind hole up and down, and is interference-fitted with the lower end of the center rod.

[0014] Moreover, the feeding mechanism includes a circular base, a rotating disk, a supporting shaft, a lifting seat, a mechanical arm mechanism, a suction cup mechanism and the feeding table; the rotating disk is rotatably coaxially installed on the upper end of the circular base; the supporting shaft is coaxially fixedly installed on the upper end of the rotating disk; the lifting seat is movably connected to the side of the supporting shaft up and down, and the mechanical arm mechanism adopts a multi-section connecting arm structure, one end of which is relatively rotatably connected to the front end circular base of the lifting seat, and the other end is connected to the suction cup mechanism.

[0015] Moreover, the robotic arm mechanism includes a first rotary mechanism, a second robotic arm, a third robotic arm and a fourth robotic arm; the first rotary mechanism includes a disc-shaped rotary shaft and a square support frame, the disc-shaped rotary shaft is coaxially installed with the circular base of the lifting seat, and is driven by a motor built into the lifting seat; the square support frame portion of the first rotary mechanism is provided with an axial hole; axial holes are provided at both ends of the second robotic arm, the axial hole at one end of the second robotic arm is coaxially installed with the axial hole of the square support frame of the first rotary mechanism, and is driven by the first feeding motor; axial holes are provided at both ends of the third robotic arm, the axial hole at one end of the third robotic arm is coaxially installed with the axial hole at the other end of the second robotic arm, and is driven by the second feeding motor; an axial hole is provided at one end of the fourth robotic arm, the axial hole is coaxially connected with the axial hole at the other end of the third robotic arm, and is driven by the third feeding motor; the other end of the fourth robotic arm is fixedly connected to the suction cup seat, and a plurality of suction cup heads are fixed on the suction cup seat to form a suction cup structure.

[0016] Moreover, a group of inner connection blocks are fixed on each side of the column part of the central rod, each group of inner connection blocks includes an inner upper connection block and an inner lower connection block, an oblong guide hole along the upper and lower squares is provided on the inner upper connection block, and an axial hole is provided on the inner lower connection block; the expansion rod adopts a D-shaped rod, and a group of outer connection blocks are fixed on the inner side plane of each expansion rod, each group of outer connection blocks includes an outer upper connection block and an outer lower connection block, an oblong guide hole along the upper and lower squares is provided on the outer upper connection block, and an axial hole is provided on the outer lower connection block;

[0017] The upper end axial holes of the two intersecting rods of each group of support frames are respectively connected to the oblong guide holes on the upper external connecting blocks of the corresponding support rods and the oblong guide holes on the inner upper connecting blocks on the corresponding surfaces of the center rods through their own pins; the lower end axial holes of the two intersecting rods of each group of support rod frames are respectively connected to the axial holes on the lower external connecting blocks of the corresponding support rods and the axial holes on the inner lower connecting blocks on the corresponding surfaces of the center rods through their own pins, wherein the pins connected to the oblong guide holes can move up and down in the guide holes.

[0018] Moreover, a pin shaft in the oblong guide hole of each inner upper connecting block of the center rod is connected to a moving block, and the moving block is horizontally arranged. Six moving blocks are arranged in the circumferential direction at the outer part of the center rod near the upper end, and the six moving blocks are fixedly connected to form a moving ring structure; the first electric push rod is vertically arranged with the push rod end facing downward, and its rod barrel end is fixed to the upper cylindrical sub-rod part of the center rod, and its push rod end is fixedly connected to one of the moving blocks.

[0019] Moreover, each conveying unit includes a worm, a worm wheel, and a conveying drive motor; the worm is arranged in the middle hole of the expansion rod and is installed coaxially with the expansion rod; the conveying drive motor is fixedly installed at the bottom end of the expansion rod and is connected to the worm through a coupling; each conveying unit includes 8 worm wheels, which are divided into two rows, with 4 worm wheels arranged longitudinally in each row, and the angle between the two rows of worm wheels is 60°. The 8 worm wheels are all meshed with the worm for transmission, and the worm wheel is partially exposed on the outside of the expansion rod, and the exposed part is in friction contact with the inner surface of the ton bag discharge port to achieve transportation and posture adjustment of the discharge port.

[0020] Moreover, the hemming mechanism includes a base, a first hemming motor, a first section of a mechanical arm, a second hemming motor, a second section of a mechanical arm, a third hemming motor, a hemming machine base, a hemming machine, a position detection transmitter, and a cloth position detector;

[0021] The base is fixed on the horizontal table top of the support table, and an axial hole matching the first mechanical arm is provided above the base, and the first curling motor is installed on one side of the base; axial holes are provided at both ends of the first mechanical arm, and the axial hole at one end is coaxially installed with the axial hole on the base and is driven by the first curling motor; axial holes are provided at both ends of the second mechanical arm, and the axial hole at one end is coaxially installed with the axial hole at the other end of the first mechanical arm and is driven by the second curling motor, and the second curling motor is installed on the outer side of the other end of the first mechanical arm; an axial hole is provided at one end of the hemming machine base, and the axial hole is coaxially installed with the axial hole at the other end of the second mechanical arm and is driven by the third curling motor, and the third curling motor is installed on the outer side of the other end of the second mechanical arm; the hemming machine is fixedly installed on the plane of the hemming machine base; the position detection transmitter is installed on the hemming machine base, and is used for the end position detection of the sewing mechanism; the cloth position detector is installed on the edge of the hemming machine base, and is used for the end position detection of the hemming machine.

[0022] Moreover, the sewing mechanism includes the long-arm sewing machine, a mobile base, a second electric push rod, and a position detection receiver; the long-arm sewing machine is fixedly installed on the mobile base, the mobile base is placed on the sewing mechanism positioning groove set on the horizontal table, the head of the second electric push rod is fixedly installed on the rear side of the sewing mechanism positioning groove, and the push rod part is fixed on the mobile base; the position detection receiver is fixed on the long-arm sewing machine and is used in conjunction with the position detection transmitter to complete the end position detection of the sewing mechanism.

[0023] The advantages and positive effects of the present invention are:

[0024] 1. The present invention integrates the adjustment-conveying mechanism and the rotating mechanism into one device, realizing a highly ingenious integrated design of functions. After the worker sets the bottom bag of the ton bag on the bottom bag support seat, the feeding mechanism automatically conveys the discharge port to the periphery of the adjustment-conveying mechanism, and then realizes the opening of the discharge port, downward conveyance and curling of the bottom end in turn, and finally the curling of the bottom end of the discharge port of the ton bag is sewn with the circumference of the bottom bag of the ton bag through the sewing mechanism. After sewing, the worker can take down the finished product at the same position.

[0025] 2. The present invention is provided with an adjustment-conveying mechanism, and through the telescopic movement of the first electric push rod, the opening diameters of the six groups of scissor-type opening frames are adjusted, thereby realizing the opening and downward conveying of discharge ports of various sizes.

[0026] 3. The present invention installs the conveying unit inside the propping rod, so that one rod can be used for multiple purposes, and has the advantages of compact and simple structure and high degree of automation. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is the overall structure of the present invention;

[0028] Figure 2 It is a three-dimensional schematic diagram of the frame structure of the present invention;

[0029] Figure 3 It is a three-dimensional schematic diagram of the feeding mechanism of the present invention;

[0030] Figure 4 It is a three-dimensional schematic diagram of the rotating mechanism of the present invention;

[0031] Figure 5 It is a schematic diagram of the center disk and the bottom bag support seat of the present invention;

[0032] Figure 6 is a three-dimensional schematic diagram of the adjustment-conveying mechanism of the present invention;

[0033] Figure 7 is a detailed schematic diagram of the adjustment-conveying mechanism of the present invention;

[0034] Figure 8 yes Figure 7 A partial enlarged schematic diagram;

[0035] Fig. 9 is a schematic diagram of a moving block of the adjustment-conveying mechanism of the present invention;

[0036] Fig.10 is a three-dimensional schematic diagram of a conveying unit of the adjustment-conveying mechanism of the present invention;

[0037] Fig.11 It is a three-dimensional schematic diagram of the crimping mechanism of the present invention;

[0038] Fig.12It is a three-dimensional schematic diagram of the installation of the sewing mechanism of the present invention;

[0039] Fig.13 It is a schematic diagram of the discharge port of the feeding mechanism adsorbing the feeding table of the present invention;

[0040] Fig.14 It is a schematic diagram of the feeding mechanism of the present invention conveying the material outlet to the adjusting-conveying mechanism;

[0041] Fig.15 It is a schematic diagram of the adjustment-conveying mechanism of the present invention to open the discharge port;

[0042] Fig.16 yes Fig.15 A partial enlarged schematic diagram. DETAILED DESCRIPTION

[0043] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0044] A sewing device for the outlet of a ton bag, see Figure 1-Figure 16 The invention point is: it includes a frame 1, a feeding mechanism 2, a rotating mechanism 3, an adjustment-conveying mechanism 4, a crimping mechanism 5 and a sewing mechanism 6.

[0045] The frame 1 is a fixing device supporting other mechanisms. The feeding mechanism 2 is used to transport the discharge port to the processing position; the rotating mechanism 3 is used for curling the discharge port and sewing the discharge port and the bottom bag of the ton bag; the adjustment-conveying mechanism 4 is used to complete the opening, posture adjustment and downward conveying of the discharge port; the curling mechanism 5 is used to complete the bottom curling of the discharge port; and the sewing mechanism 6 is used to complete the sewing of the bottom curling of the discharge port and the bottom bag of the ton bag.

[0046] The frame 1 is as Figure 2 As shown, a support table structure is adopted, and six support legs are arranged at the bottom of the support table, wherein the lower ends of the support legs near the four corners are provided with foot plates 1.1, and screw holes are provided on the foot plates, which are fixed to the ground by screws to fix the position of the sewing device. The upper desktop of the support table includes a horizontal desktop part and a lower inclined desktop part connected to one side of the horizontal desktop part, and the angle between the inclined desktop part and the horizontal desktop part is 135°. A circular positioning through hole 1.2 is vertically arranged at the center of the inclined desktop part, which is used to position the rotating mechanism 3 and the adjustment-conveying mechanism 4. A sewing mechanism positioning groove 1.4 is arranged in the middle of the horizontal desktop part, which is used to position the sewing mechanism 6. A curling mechanism positioning hole 1.3 is arranged on the horizontal desktop part on one side of the sewing mechanism positioning groove, which is used to install the curling mechanism 5.

[0047] The feeding mechanism 2 is as follows Figure 3As shown, it includes a circular base 2.1, a rotating disk 2.2, a supporting shaft 2.3, a lifting seat 2.4, a mechanical arm mechanism, a suction cup mechanism 2.6, a motor group, and a feeding table 2.8; the mechanical arm mechanism adopts a multi-section connecting arm structure, one end of which is relatively rotatably connected to the front circular base of the lifting seat, and the other end of the mechanical arm mechanism is connected to the suction cup mechanism. In the present invention, the mechanical arm mechanism includes a first section rotary mechanism 2.5.1, a second section mechanical arm 2.5.2, a third section mechanical arm 2.5.3, and a fourth section mechanical arm 2.5.4. The motor group includes a first feeding motor 2.7.1, a second feeding motor 2.7.2, and a third feeding motor.

[0048] The circular base 2.1 is fixedly installed on the left side of the support table. The rotating disk 2.2 is installed coaxially with the circular base 2.1 and can rotate around the central axis of the circular base 2.1; the supporting shaft 2.3 is fixedly installed on the upper end of the rotating disk 2.2; the lifting seat 2.4 is connected to the side of the supporting shaft 2.3 in an upward and downward movable manner through its driving mechanism (which can adopt a lead screw nut driving mechanism, an electric push rod, etc.). The first rotary mechanism 2.5.1 includes a disc-shaped rotary shaft and a square support frame. The disc-shaped rotary shaft is coaxially installed with the circular base of the lifting seat 2.4. The lifting seat 2.4 is internally installed with a motor driving the disc-shaped rotary shaft, driving the first rotary mechanism 2.5.1 to rotate around the central axis of the base of the lifting seat 2.4. The square support frame of the first rotary mechanism 2.5.1 has an axial hole, which is coaxially installed with one end of the second mechanical arm; the second mechanical arm 2.5.2 has axial holes at both ends, and one end is coaxially installed with the axial hole of the square support frame of the first rotary mechanism 2.5.1. The first feeding motor 2.7.1 is fixedly installed on the square plate of the disc-shaped rotary shaft of the first rotary mechanism, driving the second mechanical arm 2.5.2 to rotate around the central axis of the axial hole of the square support frame of the first rotary mechanism 2.5.1. The other end of the second mechanical arm is coaxially installed with the axial hole at one end of the third mechanical arm 2.5.3. The third section mechanical arm 2.5.3 is provided with shaft holes at both ends, one end is coaxially installed with the shaft hole of the second section mechanical arm 2.5.2, and the second feeding motor 2.7.2 is fixedly installed at the end where the second section mechanical arm 2.5.2 is connected to the third section mechanical arm 2.5.3, driving the third section mechanical arm 2.5.3 to rotate around the central axis of the shaft hole connected to one end of the second section mechanical arm 2.5.2. The other end of the third section mechanical arm 2.5.3 is coaxially installed with the shaft hole of the fourth section mechanical arm 2.5.4; the fourth section mechanical arm 2.5.4 has a shaft hole at one end, which is coaxially installed with the shaft hole of the third section mechanical arm 2.5.3, and the third feeding motor is fixedly installed at the end where the third section mechanical arm 2.5.3 is connected to the fourth section mechanical arm 2.5.4, driving the fourth section mechanical arm 2.5.4 to rotate around the central axis of the shaft hole connected to one end of the fourth section mechanical arm 2.5.4 and the third section mechanical arm 2.5.3. The other end of the fourth mechanical arm is fixedly mounted on the suction cup structure 2.6, which includes a suction cup seat and a plurality of suction cup heads fixed on the suction cup seat. The suction cup structure is used to complete the feeding work of the discharge port. The feeding table 2.8 is located on the left side of the circular base 2.1 and is used to stack the discharge port in the initial state.

[0049] The rotating mechanism 3 is as follows Figure 4 As shown, it includes a central disc 3.1, a bottom bag support seat 3.2, and a rotation drive motor 3.3.

[0050] like Figure 5As shown, there is a hexagonal blind hole 3.1.1 in the center of the center disk, which is used to align with the hexagonal through hole 3.2.1 of the bottom bag support seat 3.2, and the bottom bag support seat 3.2 is fixedly connected to the center disk 3.1 by passing through the center rod 4.1. The center disk 3.1 is directly installed above the inclined desktop of the support table, and is installed coaxially with the circular positioning through hole 1.2 on the inclined desktop, forming an angle of 45° with the horizontal plane, which is used to position the overall structure of the rotating mechanism. The bottom bag support seat 3.2 is a rectangular parallelepiped, and its length and width are slightly smaller than the size of the bottom bag hole of the ton bag. The rotary drive motor 3.3 is installed below the inclined desktop of the support table, fixed by screws, and used to drive the center disk 3.1 and the bottom bag support seat 3.2 to rotate synchronously.

[0051] The adjustment-conveying mechanism 4 is as follows Figure 6 As shown, it includes a central rod 4.1, six expansion rods 4.2, an expansion control mechanism 4.3, three groups of conveying units 4.4, a pressure sensor 4.5, and a position sensor 4.6.

[0052] like Figure 7 As shown, the center rod 4.1 includes a regular hexagonal main rod part and a cylindrical auxiliary rod part arranged at the upper end. The hexagonal size of the hexagonal main rod part is the same as the size of the hexagonal blind hole 3.1.1 in the center of the center disk 3.1 and the hexagonal through hole 3.2.1 in the center of the bottom bag support seat 3.2. The lower end of the hexagonal main rod part is inserted into the hexagonal blind hole 3.1.1 through the hexagonal through hole 3.2.1, and is fixed with the bottom bag support seat 3.2 and the center disk 3.1 by interference fit. The cylindrical auxiliary rod part is used to install the first electric push rod 4.3.4 of the opening control mechanism 4.3; each side of the hexagonal main rod part is fixed with a group of inner connecting blocks, each group of inner connecting blocks includes two inner upper connecting blocks 4.1.1 and inner lower connecting blocks 4.1.2, and the inner upper connecting block 4.1.1 is a rectangular block, on which oblong guide holes along the upper and lower squares are arranged. The inner lower connecting block 4.1.2 is a rectangular block with an axial hole. The connecting block structure is used to cooperate with the expansion frame 4.3.1 of the expansion control mechanism 4.3 to control the expansion and contraction process of the expansion rod 4.2, so as to adapt to the adjustment and transportation of discharge ports of various sizes.

[0053] There are six expansion rods 4.2, which are evenly distributed along the circumferential direction with the central rod 4.1 as the center. The expansion rods are D-shaped rods. A group of external connection blocks are fixed on the inner plane of each expansion rod, and each group of external connection blocks includes an upper external connection block 4.2.1 and a lower external connection block 4.2.2. The upper external connection block 4.2.1 is a rectangular block, on which oblong guide holes along the upper and lower squares are provided, and the lower external connection block 4.2.2 is a rectangular block, on which an axial hole is provided, and the external connection blocks are used to cooperate with the expansion frame 4.3.1 of the expansion control mechanism 4.3 to complete the expansion and contraction process of the expansion rod 4.2, so as to adapt to the adjustment and transportation of discharge ports of various sizes;

[0054] like Figure 7 As shown, the expansion control mechanism 4.3 adopts a scissor-type expansion control mechanism, including six groups of scissor-type expansion frames 4.3.1, a pin shaft 4.3.2, six moving blocks 4.3.3, and a first electric push rod 4.3.4. Each group of expansion frames is composed of two expansion rods hinged in the middle by a pin shaft, and the two intersecting rods can rotate relative to each other around the central axis of the middle pin shaft.

[0055] The six groups of scissor-type spread frames 4.3.1 correspond to the six spread rods 4.2 and the six sides of the center rod. The spread frames 4.3.1 have axial holes in the middle and at both ends, and the size of the axial holes is the same as the axial holes of the inner lower connecting block 4.1.2 of the center rod 4.1 and the axial holes of the outer upper connecting block 4.2.1 of the spread rod 4.2.

[0056] The upper end axial holes of the two intersecting rods of each group of support frames are respectively connected to the oblong guide holes on the upper external connecting blocks of the corresponding support rods and the oblong guide holes on the inner upper connecting blocks on the corresponding surfaces of the center rods through their own pins; the lower end axial holes of the two intersecting rods of each group of support rod frames are respectively connected to the axial holes on the lower external connecting blocks of the corresponding support rods and the axial holes on the inner lower connecting blocks on the corresponding surfaces of the center rods through their own pins, wherein the pins connected to the oblong guide holes can move up and down in the guide holes.

[0057] like Figure 8 , Fig. 9 As shown, six moving blocks are arranged in the peripheral part of the center rod near the upper end along the circumferential direction, and the six moving blocks are fixedly connected to form a moving ring structure. The six moving blocks are respectively fixedly connected to the pin ends of the inner upper connecting blocks connected to the six faces.

[0058] The first electric push rod 4.3.4 is arranged vertically with the push rod end facing downward, and its rod barrel end is fixed to the upper cylindrical auxiliary rod part of the center rod 4.1, and its push rod end is fixedly connected to one of the moving blocks 4.3.3. When the push rod of the first electric push rod 4.3.4 is extended downward, the six moving blocks 4.3.3 are moved downward, and the six moving blocks 4.3.3 drive the six groups of scissor-type opening frames to move outward and open; and when the first electric push rod 4.3.4 is retracted upward, the six moving blocks 4.3.3 are moved upward, and the six moving blocks 4.3.3 drive the six groups of scissor-type opening frames to move inward and shrink.

[0059] like Fig.10As shown, there are three groups of conveying units 4.4, which are respectively installed on three non-adjacent expansion rods 4.2. The conveying unit 4.4 includes a worm 4.4.1, a worm wheel 4.4.2, and a conveying drive motor 4.4.3. The worm 4.4.1 is installed in the middle hole of the expansion rod 4.2 and is installed coaxially with the expansion rod 4.2. The rotation of the worm 4.4.1 drives the worm wheel 4.4.2 meshing with it to rotate. Each group of conveying units 4.4 includes 8 worm wheels 4.4.2, which are divided into two rows, and 4 are arranged longitudinally in each row. The angle between the two rows of worm wheels 4.4.2 is 60°, and they are all meshed with the worm 4.4.1 for transmission. The rotation of the worm drives the worm wheel 4.4.2 to rotate. Each worm wheel is installed on the expansion rod through its own axis. The worm wheel is partially exposed on the outside of the expansion rod, and the exposed part is in friction contact with the inner surface of the discharge port of the ton bag to realize the conveying and posture adjustment of the discharge port. The conveying drive motor 4.4.3 is fixed to the bottom end of the expansion rod 4.2 by screws, and is connected to the worm 4.4.1 through a coupling to provide power for conveying and posture adjustment of the discharge port.

[0060] like Figure 6 As shown, there are three groups of pressure sensors 4.5, which are respectively installed on the outside of the three expansion rods without the conveying unit, and are used to control the cut-off position of the expansion process. When the pressure reaches the threshold, the electric push rod stops pushing outward, and the expansion process ends. There are three groups of position sensors 4.6, which are respectively located near the upper end of the three expansion rods without the conveying unit, and are used to control the cut-off position of the conveying process. When the position sensor feedbacks, the conveying unit stops conveying downward, and the conveying process ends.

[0061] The crimping mechanism 5 is as follows Fig.11 As shown, it includes a base 5.1, a first hemming motor 5.2, a first mechanical arm 5.3, a second hemming motor 5.4, a second mechanical arm 5.5, a third hemming motor 5.6, a hemming device base 5.7, a hemming device 5.8, a position detection transmitter 5.9, and a cloth position detector 5.10;

[0062] The base 5.1 is fixed to the position of the hemming mechanism positioning hole 1.3 of the horizontal desktop part of the support table by screws, and serves as the positioning mechanism of the entire hemming mechanism. There are two shaft holes on the top of the base 5.1 that match the first mechanical arm 5.3, which serve as the installation position of the first mechanical arm 5.3. The first hemming motor 5.2 is installed on one side of the base 5.1 by screws to provide power for the rotation of the first mechanical arm;

[0063] The first mechanical arm 5.3 is provided with shaft holes at both ends, one end shaft hole is coaxially installed with the shaft hole on the base 5.1, and the other end shaft hole is coaxially installed with the shaft hole at one end of the second mechanical arm 5.5. The first mechanical arm 5.3 is installed on the base through the central axis, and obtains power through the first hemming motor 5.2, and can rotate around the center of the shaft hole near the end of the base 5.1. The second hemming motor 5.4 is installed on the outside of the other end of the first mechanical arm through screws to provide power for the rotation of the second mechanical arm 5.5;

[0064] The second mechanical arm 5.5 is provided with shaft holes at both ends, and the shaft hole at one end is coaxially installed with the shaft hole of the first mechanical arm 5.3, and is powered by the second curling motor 5.4, and can rotate around the center of the shaft hole near the other end of the first mechanical arm 5.3, and the other end of the second mechanical arm is coaxially installed with the shaft hole of the hemming device base 5.7, and the third curling motor 5.6 is fixedly installed on the outer side of the other end of the second mechanical arm 5.5 by screws, controls the movement of the hemming device base 5.7, and provides power for the rotation of the hemming device base 5.7;

[0065] The hemming machine base 5.7 has an axial hole, which is coaxially installed with the axial hole at the other end of the second mechanical arm 5.5 and can rotate around this through hole. The hemming machine 5.8 is fixed on the plane of the hemming machine base 5.7 by screws; the position detection transmitter 5.9 is installed on the hemming machine base 5.7 for detecting the end position of the sewing mechanism; the cloth position detector 5.10 is installed on the edge of the hemming machine base 5.7 for detecting the end position of the hemming machine. The hemming mechanism 5 can adjust its posture as a whole to adapt to the hemming process of multiple-sized outlets and enhance the strength during sewing.

[0066] The sewing mechanism 6 is as follows Fig.12 As shown, it includes a long-arm sewing machine 6.1, a mobile base 6.2, a second electric push rod 6.3, and a position detection receiver 6.4. The long-arm sewing machine 6.1 is fixedly mounted on the mobile base 6.2 by screws, and the mobile base 6.2 is placed at the sewing mechanism positioning groove 1.4 of the horizontal desktop part of the support table. The head of the second electric push rod 6.3 is fixedly mounted on the rear side of the sewing mechanism positioning groove 1.4, and the push rod part is fixed on the mobile base 6.2. The movement of the electric push rod drives the sewing mechanism to move forward and backward along the track to achieve the sewing of multi-sized ton bags. At the same time, the long-arm sewing machine can rotate and sew the avoidance position for the bottom bag of the ton bag to prevent the bottom bag of the ton bag from getting stuck and affecting the overall sewing process. The position detection receiver 6.4 is fixed on the long-arm sewing machine 6.1 and used in conjunction with the position detection transmitter 5.9 to complete the end position detection of the sewing mechanism.

[0067] The specific working method of the ton bag outlet sewing device of the present invention is as follows:

[0068] Before starting work, the first electric push rod 4.3.4 is in a retracted state, and the opening frame 4.3.1 is controlled to make the opening rod 4.2 in a retracted state. The bottom bag of the ton bag is manually put on the bottom bag support seat 3.2, and the preparation work is completed;

[0069] like Fig.13 As shown, the initial state of the first rotary mechanism 2.5.1 of the feeding mechanism 2 is that the square support frame part is perpendicular to the horizontal plane, the second mechanical arm 2.5.2 is parallel to the horizontal plane, the third mechanical arm 2.5.3 is perpendicular to the horizontal square, and the lifting seat 2.4 moves downward along the support shaft 2.3 until the suction cup mechanism 2.6 contacts the discharge port on the table, and the lifting seat 2.4 stops moving and sucks up the discharge port, and then, as shown in FIG. Fig.14 As shown, the first section of the rotary mechanism 2.5.1 rotates clockwise until the angle between the square support frame and the vertical direction is 10°, the second section of the mechanical arm 2.5.2 rotates upward to an angle of 60° with the horizontal plane, the third section of the mechanical arm 2.5.3 rotates inward to an angle of 80° with the second section of the mechanical arm 2.5.2, the fourth section of the mechanical arm 2.5.4 rotates inward to an angle of 160° with the third section of the mechanical arm, the lifting seat 2.4 rises to the highest state along the support shaft 2.3, the rotating disk 2.2 rotates counterclockwise 180° until the lifting seat 2.4 faces the rotating mechanism 3, and then slowly rotates counterclockwise until the three position sensors 4.6 all have feedback, stop moving, and the discharge port loading process is completed;

[0070] like Fig.15 As shown, the first electric push rod 4.3.4 extends out, drives the moving block 4.3.3 downward, and the six groups of scissor-type opening frames drive the six opening rods to move synchronously outward in the radial direction to open the discharge port until the pressure sensor 4.5 detects that the set pressure threshold is reached, the first electric push rod stops moving, and the discharge port opening work is completed;

[0071] The three conveying drive motors 4.4.3 of the conveying unit 4.4 respectively control the worm 4.4.1 of this group to drive the worm wheel 4.4.2 to rotate, so as to realize the posture adjustment of the discharge port. After completion, the three conveying drive motors 4.4.3 are started at the same time to convey the discharge port downward until the position sensor 4.6 feedbacks (the upper end of the discharge port moves to the position sensor and the position sensor can no longer detect it), the discharge port reaches the predetermined position, and the conveying work is completed;

[0072] like Fig.16As shown, the three motors of the hemming mechanism 5 control the rotation of the first mechanical arm 5.3, the second mechanical arm 5.5 and the hemming device base 5.7. When the cloth position detector 5.10 installed on the edge of the hemming device base 5.7 detects that the cloth is at the set position, the hemming mechanism stops moving as a whole, and the material outlet after conveying smoothly enters the hemming device 5.8. The second electric push rod 6.3 pushes out to push the moving base 6.2. When the position detection receiver 6.4 fixed on the long arm sewing machine 6.1 receives the signal sent by the position detection transmitter 5.9 fixed on the hemming device base 5.7, the second electric push rod 6.3 stops moving, and the hemming sewing part preparation work is completed.

[0073] The conveying unit 4.4 continues to convey the material outlet downward by 4 cm, and conveys the material outlet into the crimping device 5.8. The rotary drive motor 3.3 controls the center disc 3.1 and the bottom bag support seat 3.2 to rotate synchronously, and at the same time drives the adjustment-conveying mechanism 4 to rotate, and the crimping and sewing work of the material outlet is completed synchronously.

[0074] The first electric push rod 4.3.4 contracts and drives the moving block 4.3.3 upward, and the six groups of scissor-type opening frames drive the six opening rods to move radially inward synchronously to release the opening effect on the discharge port. Then, the bottom bag and the discharge port of the sewn ton bag are manually removed.

[0075] Repeat the above steps to sew the bottom bag and the discharge port of the next ton bag.

[0076] The above description is only by way of illustration of certain exemplary embodiments of the present invention. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A ton bag outlet sewing device, characterized in that: It includes a frame, a feeding mechanism, a rotating mechanism, an adjusting-conveying mechanism, a crimping mechanism and a sewing mechanism; The frame adopts a support table structure, and the upper desktop of the support table includes a horizontal desktop part and a lower inclined desktop part connected to one side of the horizontal desktop part; the rotating mechanism is vertically installed on the lower inclined desktop, including a central disk, a bottom bag support seat and a rotating drive motor; the shape of the bottom bag support seat matches the shape of the inner hole on the bottom bag of the ton bag, the bottom bag support seat and the central disk are arranged above the lower inclined desktop in a coaxial manner, and the rotating drive motor is arranged below the lower inclined desktop and is drivingly connected to the lower end of the central disk; The adjustment-conveying mechanism includes a center rod, six spreading rods, a spreading control mechanism, three groups of conveying units, a pressure sensor and a position sensor; the main part of the center rod is a regular hexagonal rod structure, and the lower end of the center rod is inserted and fixed with the center hole on the bottom bag support seat and the center hole on the center disk; the six spreading rods are arranged on the periphery of the center rod along the circumferential direction and are opposite to the six faces of the center rod one by one, and the spreading control mechanism includes six groups of scissor-type spreading frames, which are respectively connected to the six faces of the center rod and the corresponding The first electric push rod is used to drive the opening of the ton bag outlet sleeved on the outer periphery of the six opening rods; three groups of conveying units are respectively installed on three opening rods that are not adjacent to each other, so as to realize the downward conveying of the ton bag outlet; three groups of pressure sensors are respectively installed on the outside of the three opening rods without conveying units, so as to control the cut-off position of the opening process of the outlet; three groups of position sensors are respectively installed on the three opening rods without conveying units, near the upper end, so as to control the cut-off position of the conveying process of the outlet; The feeding mechanism is arranged outside the left side of the frame, and is used to transfer the discharge ports of the ton bags stacked on the feeding table by adsorption and put them on the periphery of the six support rods; The sewing mechanism comprises a long-arm sewing machine, which is mounted on the horizontal table of the support table in a forward and backward adjustable manner with the sewing end facing the rotation center of the rotating mechanism; the hemming mechanism is mounted on the horizontal table of the support table at a side outside position of the sewing mechanism; The curling mechanism is used to complete the curling action of the bottom end of the discharge port; the sewing mechanism is used to complete the sewing action of the curling action of the bottom end of the discharge port and the bottom bag of the ton bag.

2. The ton bag outlet sewing device according to claim 1 is characterized in that: A hexagonal blind hole is arranged at the center of the center disk, and a hexagonal through hole is arranged at the center of the bottom bag support seat. The hexagonal through hole is aligned with the hexagonal blind hole up and down, and is interference-fitted with the lower end of the center rod.

3. The ton bag outlet sewing device according to claim 1 is characterized in that: The feeding mechanism includes a circular base, a rotating disk, a supporting shaft, a lifting seat, a mechanical arm mechanism, a suction cup mechanism and the feeding table; the rotating disk is rotatably coaxially installed on the upper end of the circular base; the supporting shaft is coaxially fixedly installed on the upper end of the rotating disk; the lifting seat is movably connected to the side of the supporting shaft up and down, and the mechanical arm mechanism adopts a multi-section connecting arm structure, one end of which is relatively rotatably connected to the front end circular base of the lifting seat, and the other end is connected to the suction cup mechanism.

4. The ton bag outlet sewing device according to claim 3 is characterized in that: The mechanical arm mechanism comprises a first rotary mechanism, a second mechanical arm, a third mechanical arm and a fourth mechanical arm; the first rotary mechanism comprises a disc-shaped rotary shaft and a square support frame, the disc-shaped rotary shaft is coaxially installed with the circular base of the lifting seat, and is driven by a motor built in the lifting seat; the square support frame part of the first rotary mechanism is provided with an axial hole; both ends of the second mechanical arm are provided with axial holes, the axial hole at one end of the second mechanical arm is coaxially installed with the axial hole of the square support frame of the first rotary mechanism, and is driven by the first feeding motor; both ends of the third mechanical arm are provided with axial holes, the axial hole at one end of the third mechanical arm is coaxially installed with the axial hole at the other end of the second mechanical arm, and is driven by the second feeding motor; one end of the fourth mechanical arm is provided with an axial hole, the axial hole is coaxially connected with the axial hole at the other end of the third mechanical arm, and is driven by the third feeding motor; the other end of the fourth mechanical arm is fixedly connected with the suction cup seat, and a plurality of suction cup heads are fixed on the suction cup seat to form a suction cup structure.

5. The ton bag outlet sewing device according to claim 1 is characterized in that: A group of inner connection blocks are fixed on each side of the column part of the center rod, and each group of inner connection blocks includes an inner upper connection block and an inner lower connection block, and an oblong guide hole along the upper and lower squares is provided on the inner upper connection block, and an axial hole is provided on the inner lower connection block; the expansion rod adopts a D-shaped rod, and a group of outer connection blocks are fixed on the inner side plane of each expansion rod, and each group of outer connection blocks includes an outer upper connection block and an outer lower connection block, and an oblong guide hole along the upper and lower squares is provided on the outer upper connection block, and an axial hole is provided on the outer lower connection block; The upper end axial holes of the two intersecting rods of each group of support frames are respectively connected to the oblong guide holes on the upper external connecting blocks of the corresponding support rods and the oblong guide holes on the inner upper connecting blocks on the corresponding surfaces of the center rods through their own pins; the lower end axial holes of the two intersecting rods of each group of support rod frames are respectively connected to the axial holes on the lower external connecting blocks of the corresponding support rods and the axial holes on the inner lower connecting blocks on the corresponding surfaces of the center rods through their own pins, wherein the pins connected to the oblong guide holes can move up and down in the guide holes.

6. The ton bag outlet sewing device according to claim 5 is characterized in that: A moving block is connected to the pin shaft in the oblong guide hole of each inner upper connecting block of the center rod, and the moving block is horizontally arranged. Six moving blocks are arranged in the circumferential direction at the outer part of the center rod near the upper end, and the six moving blocks are fixedly connected to form a moving ring structure; the first electric push rod is vertically arranged with the push rod end facing downward, and its rod barrel end is fixed to the upper cylindrical sub-rod part of the center rod, and its push rod end is fixedly connected to one of the moving blocks.

7. The ton bag outlet sewing device according to claim 1 is characterized in that: Each conveying unit includes a worm, a worm wheel, and a conveying drive motor; the worm is arranged in the middle hole of the expansion rod and is installed coaxially with the expansion rod. The conveying drive motor is fixedly installed at the bottom end of the expansion rod and is connected to the worm through a coupling; each conveying unit includes 8 worm wheels, which are divided into two rows, with 4 worm wheels arranged longitudinally in each row. The angle between the two rows of worm wheels is 60°, and the 8 worm wheels are all meshed with the worm. The worm wheel is partially exposed on the outside of the expansion rod, and the exposed part is in friction contact with the inner surface of the ton bag discharge port to achieve transportation and posture adjustment of the discharge port.

8. The ton bag outlet sewing device according to claim 1 is characterized in that: The hemming mechanism comprises a base, a first hemming motor, a first mechanical arm, a second hemming motor, a second mechanical arm, a third hemming motor, a hemming machine base, a hemming machine, a position detection transmitter, and a cloth position detector; The base is fixed on the horizontal table top of the support table, and an axial hole matching the first mechanical arm is provided above the base, and the first curling motor is installed on one side of the base; axial holes are provided at both ends of the first mechanical arm, and the axial hole at one end is coaxially installed with the axial hole on the base and is driven by the first curling motor; axial holes are provided at both ends of the second mechanical arm, and the axial hole at one end is coaxially installed with the axial hole at the other end of the first mechanical arm and is driven by the second curling motor, and the second curling motor is installed on the outer side of the other end of the first mechanical arm; an axial hole is provided at one end of the hemming machine base, and the axial hole is coaxially installed with the axial hole at the other end of the second mechanical arm and is driven by the third curling motor, and the third curling motor is installed on the outer side of the other end of the second mechanical arm; the hemming machine is fixedly installed on the plane of the hemming machine base; the position detection transmitter is installed on the hemming machine base, and is used for the end position detection of the sewing mechanism; the cloth position detector is installed on the edge of the hemming machine base, and is used for the end position detection of the hemming machine.

9. The ton bag outlet sewing device according to claim 8, characterized in that: The sewing mechanism includes the long-arm sewing machine, a mobile base, a second electric push rod, and a position detection receiver; the long-arm sewing machine is fixedly installed on the mobile base, the mobile base is placed on a sewing mechanism positioning groove set on a horizontal table, the head of the second electric push rod is fixedly installed on the rear side of the sewing mechanism positioning groove, and the push rod part is fixed on the mobile base; the position detection receiver is fixed on the long-arm sewing machine and is used in conjunction with the position detection transmitter to complete the end position detection of the sewing mechanism.

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